Heat-insulating shipping container



Jan. 29, 1929.

D. J. OBRIEN HEAT INSULATING SHIPPINGGONTAINER F ld April 4. 1927- 2 Sheets-Sheet 2 Patented Jan.i ,29, 1929.

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HEAT-INSIQJ'LATIING s Application filed April 1,

This invention relates to improvements in heat insulating receptacles of the type adapted for transshipment, handling, and storage -of refrigerated food products, such as icen cream, water ices, and the like, without utilization of refrigerant during such handling.

The essential object in view is the inertpensive production of an especiallyeflicient device of this kind.

A further object-I is the stabilizing of the structure to sustain rough handling with minimum injury.

\Vith these and further objects in viewvas will in part hereinafter become apparent and in part be stated, the invention comprises certain other novel constructions, combinations and arrangements of parts as subse-- quently specified and claimed.

In the accompanying drawings',-

.Figures -1 and 2 are perspective views of a structure embodying't-he features of the 7 present inventionftheparts being closed in Figure 1 and open in Figure 2.

Figure 3 is a longitudinal, vertical; central section taken approximately on the planeindicatedby line 33 of Figure 2- and'looking in the direction ofthe arrows.

Figure 4 is an enlarged, fragmentary, sectional elevation of the upper portion of the receptacle with the cover flaps in the open position i Figure flaps closed.

Figure 6 longitudinal, vertical section through :1. .end portion. J

Figure 7 is a fragmentary, inverted, sectional plan of the parts'seen in Figure 6..

F igure dis a perspective view of a slightly modified embodiment, the parts being seen in the closed condition Figure 9 is a sectiona is an enlarged, fragmentary, lower l perspective of a fragment of the insulating wall detached.

- Figure 10 is a section similar tothe'selotion seen in Figure '6, but advanced angularly to the plane of one of the outenbottom retaining nails Referring to the drawings by numerals, 1 indicates a wall or body portion preferably of corrugated paper, Orother effective insulating material, the wall being substantially cylindrical in the embodiment seen inthe SBVGI'EII figures, except Figure'8. The wall 1 is preferably formed of laminations of corrugated paper, or the like, with "the 5 is a similar view with the cover DAVID J. OIBRIEN, OF MANHATTAN BEACH, NEW YORK.

HIPPING- QON'IAINER.

1927. Serial No. 180,955.

grooves on corrugations extending trans-' versely about the body and preferably not longitudinally thereof Asseen clearly in Figure 9, the wall 1 preferably, in'addition to the dead air'cells produced by the horizontally extending grooves of the corrugated paper, has those dead airl cells interrupted and divided into comparatively short dead air cells by intercepting cross corrugations 2, 2, so disposed as to block the several passageways or dead air chambers caused by the circumferential corru ations or grooves of the material of wall 1. Other arrangements may, of course, be utilized, but these are found especially effective in the production of aninexpensive and successful heatinsulating wall.

A metallic liner 3' i within and in. fact..forms a part of the wall 1, the liner 3, however, being preferably in the form of a metal can having its bottom 4 upstanding from the lower extremity of the surrounding wall ofthe can 3 and thus leaving an annular 'penden't flange 5 surrounding the space beneath the bottom 4. The upper end of the can 3 has its edge preferably rolled to. provide a laterally outstanding stiffening head 6 overhanging the upper extremity of the wall 1. The outward part of the upper I end portion of the wall 1 is cutaway to form a rabbet 7 extending entirely about the upper sulating material, such as insulating'fiber 8. The fiber 8' may he hair. or other acceptable insulating substance; Surrounding the exterior surface of the wall 1 is animp'ervious jacket 9. preferably of moisture and mildew I proof material, such as specially treated can vas: The upper portion oft-he jacket 9 extends beyond the uppcr terminusof the wall 1 and forms the outer retaining casing for the insulating fiber 8. A sleeve 10 is preferhly fitted within and against the inner surface of the upper end portion ofthe wall of body 1, snugly surrounding liner 3, the'said sleeve 10 being-of the same material as the jacket 9 and extending outward beyond the upper end of the wall of body 1 and forming the inner or other casing for confining the insulating fiber 8 The said two casings meet in a seam 11 at theirouter extremity, and the said casings are slit to divide the same up into a cover flap 12 and supplemental cover flaps 13. 13. The material of'the inner and outer casings are seamed together at 14,

s'preferably arranged extremity of the ,wall'and filled with inp loo jacket 9 and the extended sleeve 10.

flap 13 which is hinged diametrically opposite flap 12 is then folded down upon the cover flap 12, and then the other two flaps 13 are succ'essively hinged down or folded to 14:, to make theseam 11 continuousabout all of the flaps. Flap 12 is provided with a supplemental disc-shaped insulating pad 12 which is preferably of the same edge contour as the crosssectional shape of can 3. Said can being cylindrical as shown, the pad 12 1 the upper end of the can 3, the hinge con sisting of thecasings made up of the extended That gether after the manner seen in Figure 1.

Attached to the outer surface of opposing flaps 12 and 13 are buckles 15,15, designed to receive straps 16', 16, carried by one of the other flaps 13, .and the last two flaps 13 carry cooperating buckle and strap connections 16 I for enabling the cover parts described to be effectively. strapped and buckled in a closed and sealing position. The angles where the several flaps meet are preferably strengthened with appropriate gussets 17, 17, resisting tear in the handling of the parts when the flaps are open, and aiding in completing the sealing action of the flaps when closedr Thespace surrounded by theflange 5 andv covered by the bottom 1 is filled by a block 18 of stable material, preferably of California red-wood both for its strength and for its heat insulating quality, the perimeter of the block corresponding to the inner contour of the flange 5 and snugly fitting therein. In the instance of-the structureseen inthe sev- .eral figuresrof the drawings, except Figure a to 8, the block 18 is in the shape of a disc. The

jacket 9 extends beyond the bottom of the wall of receptacle 1, and ispreferably notched longitudinally to provideserrations or flaps 19, 19, which are folded underneath and-- across the lower end of the wall of container 1 and extend far enough inward to lap the under face oftlie block 18. The several flaps 19 are preferably cemented to the lower end of the wall of body 1 and also to the end face i f of the block- 18, and are preferably also held by tacks or other. like appropriate securing means 20, extending through the respective flaps 19 and into the block 18. Arranged beneath the block 18 and contacting with the under face thereof is a similar red-wood block or block of similar material 21. Block 21 is also a disc in the embodiment described,

but, of course, will be givenan edge contour to conform with the cross sectional shape and size of the body 1. The block 21 outstands beyond the edges of block-18 to underlie the lower end of the wall making up the body 1, so that the periphery of block 21 lies flush with the "outer surface of said wall. Owing to the hard usage and rough handling of containers of the type under consideration; it is desirable to provide substantial reenforc-- ing means, and, to this end, a plate 22, preferably of metal, underlies the block 21 and is v arranged in face contact therewith, the plate 22 having the same peripheral contour as the block 21. Plate 22 may be anchored to the block 21 and to other parts forming the bot- 1 tom or lower end closure of the body 1 in any of various ways, one acceptable means of anchorage consisting in the utilizatlon of a series of nails or like headed fasteners 23' passed through the plate 22, through the block 21, and into block 18. Thus the fasteners 23 not only anchor the plate 22 to the blocks-21 and 18, but efi'ectively secure said blocks together. Surrounding the. block 21 and of a width to extend upward along the outer surface of the body 1 and surrounding the same in snug contact therewith is a band 2 1 preferably of metal. The lower edge portion of .band 24 is turned or rolled inward to form ahead 25 rolled to position to clamp the plate 22 firmly against 't-heunder face of block 21., Plate 22 is of a diameter to have its edge liein contact with the inner face of the band 24, so that the edge portion'of the p ate 22 is necessarily enclosed by the inturned bead 25. The band 24 is preferablyanchored to the blocksf1'8 and 21 by'nails, or like headed fasteners, 26 and 27. The nails 26' extend through the band 24, through the lower portion of the wallof body 1, and into theblock 18, while the .nails ,27, as seen in Figures 7 and 10, extend through the band 24 directly into-the blo'ck. 21. The wallmaking up the body 1 is' thus eflectively anchored to a very solid and substantial bottom by means which protect the said wall against injurious stresses, The loadstresses between thebot tom and the body of the receptacle are distributed through flange i5 and can 3 and through jacket 9, and parts engaged by said can and jacket. 7 Hence, the corrugated paper insulationmalkin 'up the major material .portion' of the we. 1 of body 1 is left free of any substantial load stresses and is depend-.

ed upon essentially for its heat-insulating capacity.

. The corrugated paper utilized is preferablyenclosed in any appropriate paper covering or superimposed sheet 1' for sealingotherwise exposed ends or sides of dead in Figure 9.

air cells, as seen As a means of facilitating handling of the v 1package, 'a belt or girdle 28 is preferably secured about the outside of the jacket 9, and iandles 29 may be fixed tosaid belt-28 and also to the acket 9, asbest seen in Figure 1.

In Figure 8 is shown a'complete'structure embodying the invention in which the same identical parts are utilized-as above described except that the structure is transversely rectangular. The structure, of course, may be caused to assume any shape desired, but the rectangular formis especiallywell adapted for storage and shipment of brick ice-cream, and, of course, the structure will be dimensioned to snugly receive a definite predetermined number of bricks or square packages containing bricks. In Figure 8, is seen the body 1 having the jacket 9 encircled by the belt 28 and provided with handles 29 corresponding to the similar parts in the structure just above described. Band 24 is applied about the bottom of body 1', and the handles 29 are preferably strengthened in their anchorage by being extended in the form of a strap 30 to a point beneath and secured to the band 24', or the strap 30 may be passed entirely about the, lower end or bottom of body 1. v

It will, of course, be understood that while the can 3, or its corresponding part in the receptacle 9, is capable'of directly receiving the food products, it is better practice for sanitary purposes to supply such food products in a supplemental wrapper or' container proportioned t9 snugly fit within the can 3. Regardless of how the can 3 may be used, it affords very gratifying results in being especially well adapted to bewashed or otherwise cleansed after use, so that the shipping package is insured of a clean, sanitary condition'at all times.

lWhile the elements 20, 23, and 26 have been I referred to as a tack or nail's respectively,

other well known anchorage means may be I utilized, such as screws, staples, or other appropriate equivalents for the particular parts illustrated and described.

It should also be apparent that the container illustrated and claimed is especially well adapted to receive a quantity of dry ice or like appropriate refrigerant for'extending the effective time for retaining the contents of the container chilled, and provision may be made for such refrigerant by the utilization of the details suclfas are illustrated in plate, and means for anchoring the outer lining to the plate through the flange 3. In heat'insulating shipping containers, the combination, with a heat insulating wall, of a metal liner therein having a pendent flange, a bottom plate enclosed within said flange, an outer lining for the wall havmg an extended portion underlyingthe plate, and means for anchoring the flange totheplate. 1

4. In heat insulating shipping containers, the combination, with a relatively fragile heat insulating- Wall, of a metal liner therein having a pendent'flange, a bottom plate en closed within said flange, an outer liningfor the wall having an extended portionunderlying the-plate, a metal band surrounding the outer lining, and means for anchoring said band, outer lining and flange of the inner lining to said, plate. 5. In heat insulating shipping containers, the combination, 'with a relatively fragile heat insulating wall, of a metal liner therein having a pendent flange, a bottom plate enclosed within said flange, an outer liningvfor the wall having an extended portion underlying the plate, a metal band surreundin'g the outer lining, means for anchoring band. outer linin and flan e of the inner lining 'to said plate, and a second platedis- .posed beneath the first-mentioned plate and anchored to said metal band.

6. InQheat insulating shipping cont'aineris, it

the combination, with a relatively fragile heat insulating wall, of a metal liner therein having a pendent flange, a bottom plate enclosed within said flange, an outer lining forthe wall having an extended portion undew lying the plate, ametal band surrounding the outer lining, means for anchoring said band,

outerv liningand flange of the inner lining to said plate, a second plate disposed beneath the first-mentioned plate and anchored to said metal band, andmeans anchoring the secondmentioned plate to the first-mentioned plate.

'7. In heat insulating shipping containers, the combination, with aqrelatively fragile heat insulating wall, of a metal liner therein having a pendent flange, ai bottom plate onmy co-pending application Serial No. 7 5,8I l; closed within said flange, an outer lining for filed December 16, 1925, or otherwise as'pre the wall having an extended portion under- .lying the plate, a metal band surrounding the outer lining, means for anchoring said band, outer lining and flange of the inner lining to said plate, a secondplate disposed beneath the first-mentioned plate and anchored to said metal band, means anchoring the second-mentioned plate to the first-mentioned plate, and a metal cover sheet for the ipst-mentioned-plate anchored to the metal and.

8.In heat insulating shipping containers, the combination, with a relatively fragile heat insulating enclosing wall, of a liner therein, an exterior liner for the wall, a stable bottom plate within the inner liner, means for anthe extended portion of the sleeve, a'heat inchoring the liners to the plate, and a second plate beneath the first plate proportioned to outstand beyond the first plate to underhang the insulating materialand means connecting the second plate to the first plate.

9. In heat insulating shipping containers, the combination, with a relatively fragile heat, insulating wall, an outer liner there-for, a metal casing lining the interior of the heat insulating container, a sleeve of substantially the same material as the outer linerlocated to surround the metal casing and lie between said casing and said insulating material, the

material of the sleeve extending beyond the metal casing and insulating wall, and the outer casing also extending beyond the insulatrng wall and substantially paralleling sulating' fillingbetween the extended portions of said casing and sleeve, said extended portions being divided into flaps and connected at their margins for retaining the interposed insulating material, the flapsbeing adapted to be folded across and serve as closures for the otherwise open end of saidmetal lining.

10. In heat insulating shipping containers, the combination, with a relatively fragile insulating wall, of inner and outer fabric linings therefor, a metal inner lining snugly fitting within said wall and stressing the fabric lining against said wall, said'metal lining having an open upper endformed with a surrounding bead overhanging pdrtions of the inner liningand stressing the same against 4 terminal portions of the insulating material,v and an exterior fabric lining for, the insulat-' ing wall, the inner fabriolining and the exterior fabriculining being extended beyond the insulating wall and 'formedinto closing 11. In heat insulating shipping container's, the combination, with a relatively lragilc insulating wall, of inner and outer fabric linings therefor, a metal inner lining snugly fitting within said Wall and stressing the fabric lining against said wall, said metal lining.

having an open upper end formed with asur rounding bead overhanging portions of the inner lining and stressing the same against is terminal portions of the insulating'material,

"an exterior fabric lining for the insulating wall, the inner fabric lining and the exterior lating wall and formed into closing flaps,

fabriclining being extended beyond the insuand abottom for the insulating wall anchored to the metallic linings 12-. In heat insulating shipping containers, the combination of a corrugated paper in sulating wall having an outwardly opening rabbet at its upper terminus, inner and outer lining means for said wall extendlng beyond said upper te rminus, insulating fiber between those portions of said linings beyond said upper terminus, sa d portions being formed into receptacle-closing flaps; and means for retaining the liners and insulating wall in the stated relation. i V V 13. In heat insulating shipplng containers,

the-combination of a corrugated paper-recepl4." In heat tacle having an'open end, the corrugated paper walls of the. receptacle being formed with a marginal rabbet at the open end, in-' p tenor and exterior liners enciosing thencor rugated paper receptacle, a stable bottom an chored to said liners, and flexible insulating material lapping the" rabbet and extending insulatingshipper containers, the combmation of a corrugated paper recepoutward from the open end of the said receptacle as continuations of the wall thereof, the

said liners also extending correspondingly outward and enclosing the flexible insulatingma'terial, the extended portions of the liners and the flexible insulating material being div ded into a plurality of flaps, and one ,of said flaps being'proportio'ned to substantially conform in shape and size with the .100. ,opening of the open end ofthe receptacle.-

In testilnonywhereof Iaifix'my signature.

I Davin 'J'. "OBRIENQ 

